Assembly & Rigging Quiz 1 Questions and
Answers 100% Solved
Define chord ✔️✔️the imaginary straight line from the leading edge to the trailing edge
Define relative wind ✔️✔️the direction the wind strikes on airfoil
Define angle of attack ✔️✔️the acute angle between the chordline and relative wind.
Define center of pressure ✔️✔️the point at which all the lift can be considered to be
concentrated.
Where is the center of pressure located? ✔️✔️aft the CG
at the intersection of the chord line and resultant lift.
What does the center of pressure do in relation to the angle of attack? ✔️✔️the center of
pressure moves forward increasing the angle of attack
Define the critical angle of attack ✔️✔️the angle of attack at which air cases to flow smoothly
over the top of the airfoil surface and beings to separate from the surface.
Define the ground effect ✔️✔️the effect of increased pressure and air reaction between the
wing and the ground, with the wing in close proximity to the ground.
Define the angle of incidence ✔️✔️the acute angle between the wing chord line and the
longitudinal axis of the plane
What do you do when you "wash-in" ✔️✔️increase angle of incidence
, What do you do when you "wash-out" ✔️✔️decrease angle of incidence
Define Fineness ratio ✔️✔️the ratio of the max wing thickness to the chord.
What does the fineness ratio determine? ✔️✔️determines the amount of the lift and
turbulence (or skin friction) produced by the wing
A high fineness ratio produces ____ lift, but ___ turbulence ✔️✔️high
higher
A low fineness ratio produces a ____ lift, but ___ turbulence ✔️✔️low
less
Define Aspect ratio ✔️✔️the ratio of the span (length) of a wing to its chord (width)
What does a aspect ratio determine? ✔️✔️the lift, drag, and maneuverability of a wing
What will a High aspect ratio produce?(3) ✔️✔️high lift,
high drag,
less maneuverable.
What will a low aspect ratio produce?(3) ✔️✔️low lift
low drag
more maneuverable
Define the center of gravity
Answers 100% Solved
Define chord ✔️✔️the imaginary straight line from the leading edge to the trailing edge
Define relative wind ✔️✔️the direction the wind strikes on airfoil
Define angle of attack ✔️✔️the acute angle between the chordline and relative wind.
Define center of pressure ✔️✔️the point at which all the lift can be considered to be
concentrated.
Where is the center of pressure located? ✔️✔️aft the CG
at the intersection of the chord line and resultant lift.
What does the center of pressure do in relation to the angle of attack? ✔️✔️the center of
pressure moves forward increasing the angle of attack
Define the critical angle of attack ✔️✔️the angle of attack at which air cases to flow smoothly
over the top of the airfoil surface and beings to separate from the surface.
Define the ground effect ✔️✔️the effect of increased pressure and air reaction between the
wing and the ground, with the wing in close proximity to the ground.
Define the angle of incidence ✔️✔️the acute angle between the wing chord line and the
longitudinal axis of the plane
What do you do when you "wash-in" ✔️✔️increase angle of incidence
, What do you do when you "wash-out" ✔️✔️decrease angle of incidence
Define Fineness ratio ✔️✔️the ratio of the max wing thickness to the chord.
What does the fineness ratio determine? ✔️✔️determines the amount of the lift and
turbulence (or skin friction) produced by the wing
A high fineness ratio produces ____ lift, but ___ turbulence ✔️✔️high
higher
A low fineness ratio produces a ____ lift, but ___ turbulence ✔️✔️low
less
Define Aspect ratio ✔️✔️the ratio of the span (length) of a wing to its chord (width)
What does a aspect ratio determine? ✔️✔️the lift, drag, and maneuverability of a wing
What will a High aspect ratio produce?(3) ✔️✔️high lift,
high drag,
less maneuverable.
What will a low aspect ratio produce?(3) ✔️✔️low lift
low drag
more maneuverable
Define the center of gravity
